However, Psyonix developer comments in the Patch 2.46 notes suggest this is intentional: "Increased dynamic range for paint finishes to allow for true black representation in non-reflective materials."
With the recent (v2.45) and the "Shadow Horde" event , Psyonix finally introduced a new class of textures specifically designed to absorb light rather than reflect it. dark textures rocket league new
Since the recent major updates (including Season 13 and the transition to Unreal Engine 5-ready assets), players have discovered a new frontier: However, Psyonix developer comments in the Patch 2